class_docstr: Runs trials in local docker containers.
  
  Make sure the machine you run on is fully trusted.
  Environment variables are used to pass the database connection string,
  which means other users on the machine may be able to see it via enumerating
  the processes on the machine and their args.
code: def docker_db_uri(self):
      return self._docker_db_uri
  
file_path: interpret/python/powerlift/src/powerlift/executors/docker.py
imports: from powerlift.bench.store import Store
  from powerlift.executors.localmachine import LocalMachine
  from powerlift.executors.base import handle_err
  from typing import Iterable, List
label_desc: Use image node_id 3 for calling the InsecureDocker obj's underlying member method code with example usage: obj.docker_db_uri() and returns: self